Music-leaf turner.



A. JOHNSEN.

MUSIC LEAF TURNER.

APPLICATION FILED AUG. 26, 1910.

Patented Oct. 10, 1911.,

3SHEETSSHEET 1.

COLUMBIA PLANOGRAP" co.,wns NNNNNNNNNNN c.

A. JOHNSEN.

MUSIC LEAF TURNER.

APPLICATION FILED AUG. 26, 1910.

1,005,710, Patented Oct. 10, 1911.

3 SHEETS-SHEET 2.

A. JOHNSEN.

MUSIC LEAF TURNER.

11PPLI0ATI0N FILED AUG. 26, 1910.

1,005,710. I Patented 0013. 10, 1911.

3 SHEBTSSHEET 3.

COLUMBIA PLANOCIRAPH (IO-,WASHINUTON. D. c.

UNITE STATE PAENT FFTQF.

ANDREW JOHNSEN, 0F WARREN, PENNSYLVANIA.

MUSIC-LEAF TURNER.

To all whom it may concern:

Be it known that 1, ANDREW JOHNSEN, a subject of the King of Denmark,residing at lVarren, in the county of Warren and State of Pennsylvania,have invented certain new and useful Improvements in Music-Leaf Turners,of which the following is a specification.

This invention embodies certain improvements in that class of devicescommonly known as music leaf turners, the invention residing in specificfeatures of the construction of the mechanism whereby leaves of musicmay be readily turned in consecutive order without the necessity ofusing the hands of the operator for such purpose.

For a full understanding of the invention, reference is to be had to thefollowing detail description and to the accompanying drawings, in whichFigure l is a front elevation of a piano showing the invention appliedthereto; Fig. 2 is a plan view partly broken away showing a part of theoperating mechanism by which the leaf turning members are actuated; Fig.3 is a view similar to Fig. 2 showing another part of the operatingmechanism, the view being really a continuation of Fig. 2 toward theleft; Fig. 1 is a longitudinal sectional view taken about on the line 1t of Fig. 2,

the slides being shown in positions assumed I when they have beenactuated to move the leaves to the left; Fig. 5 is a longitudinalsectional view taken about on the line 5 5 of Fig. 3; Fig. 6 is atranverse section taken about on the line 66 of Fig. 2; Fig. 7 is atransverse section taken about on the line 77 of Fig. 2; Fig. 8 is anend view of a piano showing the invention applied thereto; Fig. 9 is adetail perspective view of the reversing plate; Fig. 10 is a detail perspective view of one of the actuating plates; Fig. 11 is a broken detailperspective view of the left hand end of the actuating plate shown inFig. 10; Fig. 12 is a detail plan view of the pedals; Fig. 13 is adetail view of the supporting base of the vertical standard; Fig. 14 isa detail view of the angle member at the upper end of the verticalstandard; Fig. 15 is a fragmentary perspective view of the notchedportions of the actuating slides.

Throughout the following detail description and on the several figuresof the drawings, similar parts are referred to by like referencecharacters.

Specification of Letters Patent.

Application filed August 26, 1910.

Patented Oct. 111, 1911.

Serial No. 579,099.

Specifically describing the invention with reference to the main parts,as shown in Figs. 1 and 8, the music leaf turner is applied to a piano,though the invention may be used in connection with music stands,suitable attaching mechanism always being employed to operativelyconnect the music leaf turning devices with the operating pedals orother means.

The leaf turning mechanism proper con sists of a back 1, adapted to restupon the music supporting ledge of the piano A, said back having securedthereto the mechanism B for turning the leaves of the sheet music, shownat C. The mechanism B is operated preferably by means of turning andrevers ing pedals 2 and 3 supported on a suitable base 4 arranged nearthe pedals of the piano, the pedal 8 being connected with an outertubular rotatable member 5, in which is adapted for rotation a rod 6.The members 5 and 6 are provided at their outer ends with crank arms 5and 6 respectively, the crank arms each being connected, by a flexibleconnection 7 passing upwardly through a tubular standard 8, with a bellcrank lever 9 pivotally mounted on an angle member 10 by which thestandard 8 is connected with a tubular arm 11, Flexible members or connections 12, similar to the connections 7 pass through the tubular arm11., and connect the bell crank 9 with hooks 12 and 13, the hook 12being carried by a reversing plate lat shown in Fig. 9 and the hook 13being extended from the end of a sliding actuator 15 movablelongitudinally of a base plate 16 attached to the back 1 of the device.

Pivoted to the actuator 15 is a pawl 17 adapted to engage in notches 18in spaced flanges of actuating slides 19. The actuating slides 19 have apin and slot connection with the base at 20, and portions of said slidesare of U-form in cross section, as shown clearly in Fig. 6 of thedrawings. The notches 18 in the side flanges of the slides 19 areadapted to be engaged by the pawl 17 when the actuator 15 isreciprocated in an outward direction. The actuating slides 19 are nestedin one another, so to speak, and the side flanges of said slides at oneend have a stepped arrangement, certain flanges projecting higher thanothers. This construction is necessary so that when the actuator 15 ismoved outwardly the first time the pawl 17 engages the notches of thelargest flanges which are carried by one actuating slide 19, theactuator then returning to its normal position shown in Fig. 4. On thesecond outward movement of the actua tor, the notches of the slidehaving the next larger flanges are engaged and said slide is forcedoutwardly simultaneously with the movement of the actuator. Theactuating slides are toothed to form racks, as shown at 21, and saidracks engage pinions 22 which form the hub portions of the pivoted leafturning members 23. Four of the latter are illustrated though anysuitable number may be employed, there always being an actuating slidefor each member 23. Furthermore, each of the leaf turning members 23 ispreferably provided with a pivoted end sect-ion 24 provided with theclasp means 25 to directly engage the leaf of music. When the music leafturner is not in use, the members 24 are turned downwardly so as toremain in a plane below the level of the supporting flange 16 of thebase plate 16, this permitting the operator to handle each sheet ofmusic in the usual way without employing the invention.

From the foregoing it will be understood that when the actuator 15 ispulled toward the right, as shown in Fig. 2, by depression of one of thepedals 2 and 3, pivotal movement-of one of the leaf turning members 23will be effected by reason of the cooperation of the racks 21 of theactuating slides with the pinions 22 above referred to. hen all of theactuating slides have been operated, which will be accomplished in thepresent construction by depression of the pedal connected with theactuator 14 four different times, the leaves of the sheet music will allhave been turned, assuming that there are four leaves, and in order toreverse the position of said leaves, mechanism now to be described,whereby all four actuating slides 19 will be simultaneously operated,will be employed. For this purpose it is contemplated to provide at theleft hand end of the base 16, a carrier 26 operable by a lever 27pivoted to the base 16, said lever being connected by a wire or rod 28with the reversing slide 14. The slide 14 is connected, of course, withone of the pedals 2 and 3, the other pedal being connected to theactuator 15 as above set forth. Normally a coiled spring 29 tends tohold the carrier 26 in the position shown in Fig. 3, but when thereversing slide 14 is operated said carrier is forced toward theadjacent outer end of the base 16, carrying with it a plurality ofpivoted pawls 30 which have been engaged in notches 31 at the left endsof the actuating slides 19. (See Fig. 5.) When the slides 19 have beenoperated so as to throw the several leaf turning members 23 into thepositions shown in Fig. 3, the various pawls 30 engage the notches 31 ofthe slides 19 and hence movement outwardly of the reversing slide 14,through its intermediate connections with the carrier 26 will force saidcarrier toward the adjacent outer end of the plate 16, thereby pullingall of the slides 19 back into their normal positions simultaneously,throwing the leaf turning members 23 into their original positions,ready for the operation of again turning the leaves. When the actuatingslides 19, as shown in Figs. 2 and 3, are moved to the left by means ofthe carrier 26 to restore the members 23 to their original positions,the pawl 17 of the actuator 15 is raised to prevent said pawl fromengaging the flanged parts of the slides 19 as said slides are moved inthe direction stated. The raising of said pawl 17 is effected by meansof a cam flange 32 on the reversing slide 14, said flange engaging thearm 33 of a small shaft 34, and said shaft 34 having a central arm 35beneath the pawl 17, and movable upward by the cooperation of themembers 32 and 33 to engage and force the pawl 17 upwardly from theactuator 15. The shaft 34 is journaled in the sides of the actuator 15.When the slide 14, on being released, has returned to its normalposition, the pawl 17 rests in the notch of the upper actuating slide19.

The actuator 15 is guided in its movement by any suitable means, andnormally a spring 38 encircling the hook 13 tends to hold the actuator15 in the position shown in Fig. 2.

A lifting rod 36 is arranged transversely beneath the four pawls 30 andis connected with the end of a lever 37 which, when depressed, will thussimultaneously raise the pawls 30 from engagement with the slides 19.

Summing up the whole operation of the invention it will be observed thatit is necessary only for the operator to depress one of the pedals 2 and3 four times whereby to turn four leaves of sheet music, whereupondepression of the other pedal will operate the reversing slide 14 andthrow the various turned leaves of music into their original positions,ready to be again separately operated.

Detents 40 are arranged adjacent to the spring 38 to engage notches 41,in the right hand ends of the slides 19. A coil spring 17 is adapted toforce the pawl 17 toward the flanges of the slides 19.

Having thus fully described the invention, what 1 claim as new is:

1. In a music leaf turner, the combination of a plurality of actuatingslides, leaf turnoperable independently of the engaging means forrendering the same inoperative when the movement of the slides isreversed.

2. In a music leaf turner, the combination of a plurality of actuatingslides, leaf turning members carried thereby, an actuator, a pawl onsaid actuator coacting with the slides for individual movement thereofin one direction, a reversing device for reversing the movement of allof the operated slides simultaneously, and means carried by saidreversing device and operable independently of the pawl for renderingthe latter inoperative with respect to the slides on the reversemovement of the slides.

3. In a music leaf turner, the combination with a plurality of actuatingdevices, leaf turning members connected therewith for operation thereby,means for moving the actuating devices separately in one direction, andmeans for restoring said actuating devices simultaneously to theiroriginal po sitions, the last mentioned means comprising a carrier, adevice formoving said carrier in a predetermined direction, and aplurality of pawls connected with the carrier and engaging the actuatingdevices for simultaneous movement thereof.

4:. In a music leaf turner, the combination of a plurality of actuatingslides, leaf turning members associated therewith, means for operatingsaid slides in a predetermined direction, and means for restoring saidslides to their original positions said means comprising a reversingslide, a carrier, a lever connecting said slide and carrier, a pluralityof pawls mounted on the carrier for engagement with the actuatingslides, and means for holding the carrier normally in a predeterminedposition.

5. In a music leaf turner, the combination with a plurality of actuatingslides, of leaf turning members connected therewith, said slides beingprovided with flanged portions having notches in stepped arrangement, anactuator comprising a pawl adapted to engage the notches in the flangedportions of the slides, and means for reciprocating the actuator tocause separate operation of the slides to actuate the leaf turningmembers in a predetermined direction, a reversing slide, means foroperably connecting said reversing slide with the actuating slides torestore the latter to their normal positions, a device for raising thepawl of the actuator into a position wherein it will not engage thenotched flanges of the actuating slides on the return movement of thelatter, and means carried by the reversing slide for operating the pawl,raising the device aforesaid.

6. In a music leaf turner, the combination of a plurality of actuatingslides, leaf turning members connected therewith, means for moving saidslides independently of one another in a predetermined direction, and

means for returning the slides to their original positions comprising areversing device and including a slidably mounted carrier, a pivotedlever connected at one end with said carrier for shifting the sametoward and from adjacent ends of the actuating slides, a plurality ofpawls connected with said carrier and engaging the actuating slides, andmeans connected with the lever for actuating the same to move thecarrier and exert a pull upon the actuating slides through said pawls,and means for returning the carrier to a predetermined position afteractuation by said lever.

In testimony whereof I afliX my signature in presence of two witnesses.

ANDREW J OHNSEN. Witnesses:

CHRISTIAN P. OSTERGARD, FRED L. SWANSON.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

